RadioShack, which already tried to close more than a thousand stores this year, only to be stymied by creditors, disappointed investors Tuesday when it described widening losses and how much runway it has left to turn itself around.

It's by no means certain it can succeed. The chain, like Best Buy, is seeing electronics sales go to Amazon, Wal-Mart and other non-specialty retailers. Back in March, Motley Fool said RadioShack's best course of action would be to sell itself to Amazon.

Amazon continues to gain at the expense of traditional retailers, even in mature sectors such as consumer electronics. And its customers have made consumer electronics Amazon's strongest category, as Business Insider reports.

The Fort Worth-based retailer thinks it can increase traffic to its stores by becoming the first national chain to provide in-store, same-day service on popular mobile devices. Some repairs will be done in an hour or even while a customer waits.

"Fix It Here!" stations have been added to more than 284 company and franchise stores as part of a pilot program. Results are encouraging enough to expand it to 700 stores by year-end, said CEO Joe Magnacca.

Without quantifying the impact, he said: "We are seeing a positive influence on our business. It's a unique service and one that people consider us as a trustworthy source."

Investors don't seem encouraged. Shares finished Tuesday at $1.38 near the end of session, down 17 cents, or about 11 percent.